different between periphery vs ultraperipheral

English

Etymology

From Middle English periferie, from Old French peripherie, from Late Latin peripheria, from Ancient Greek ?????????? (periphéreia, “the line around the circle, circumference, part of a circle, an arc, the outer surface”), from ????????? (peripher?s, “moving around, round, circular”), from ???????? (periphér?, “I carry around, move around”), from ???? (perí, “around, about, near”) (English peri-) + ???? (phér?, “I bear, carry”).

Pronunciation

• IPA^(key): /p????f??i/
• Hyphenation US: pe?riph?ery; UK: per?iph?ery

Noun

periphery (plural peripheries)

1. The outside boundary, parts or surface of something.

   The suburbs are a city's periphery.

2. A first-rank administrative division of Greece, subdivided in provinces.

Antonyms

• center

Related terms

• peripherad
• peripheral

Translations

Further reading

• periphery in Webster’s Revised Unabridged Dictionary, G. & C. Merriam, 1913.
• periphery in The Century Dictionary, New York, N.Y.: The Century Co., 1911.

English

Alternative forms

• ultra-peripheral

Etymology

ultra- +? peripheral

Adjective

ultraperipheral (comparative more ultraperipheral, superlative most ultraperipheral)

1. On the extreme periphery
2. (physics) Describing particle collisions in which no hadronic interactions occur because of the large spatial separation between the projectile and target